drivers/media/video/ov5642.c

   1 /*
   2  * Driver for OV5642 CMOS Image Sensor from Omnivision
   3  *
   4  * Copyright (C) 2011, Bastian Hecht <hechtb@gmail.com>
   5  *
   6  * Based on Sony IMX074 Camera Driver
   7  * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de>
   8  *
   9  * Based on Omnivision OV7670 Camera Driver
  10  * Copyright (C) 2006-7 Jonathan Corbet <corbet@lwn.net>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  */
  16
  17 #include <linux/delay.h>
  18 #include <linux/i2c.h>
  19 #include <linux/slab.h>
  20 #include <linux/videodev2.h>
  21 #include <linux/module.h>
  22
  23 #include <media/soc_camera.h>
  24 #include <media/soc_mediabus.h>
  25 #include <media/v4l2-chip-ident.h>
  26 #include <media/v4l2-subdev.h>
  27
  28 /* OV5642 registers */
  29 #define REG_CHIP_ID_HIGH                0x300a
  30 #define REG_CHIP_ID_LOW                 0x300b
  31
  32 #define REG_WINDOW_START_X_HIGH         0x3800
  33 #define REG_WINDOW_START_X_LOW          0x3801
  34 #define REG_WINDOW_START_Y_HIGH         0x3802
  35 #define REG_WINDOW_START_Y_LOW          0x3803
  36 #define REG_WINDOW_WIDTH_HIGH           0x3804
  37 #define REG_WINDOW_WIDTH_LOW            0x3805
  38 #define REG_WINDOW_HEIGHT_HIGH          0x3806
  39 #define REG_WINDOW_HEIGHT_LOW           0x3807
  40 #define REG_OUT_WIDTH_HIGH              0x3808
  41 #define REG_OUT_WIDTH_LOW               0x3809
  42 #define REG_OUT_HEIGHT_HIGH             0x380a
  43 #define REG_OUT_HEIGHT_LOW              0x380b
  44 #define REG_OUT_TOTAL_WIDTH_HIGH        0x380c
  45 #define REG_OUT_TOTAL_WIDTH_LOW         0x380d
  46 #define REG_OUT_TOTAL_HEIGHT_HIGH       0x380e
  47 #define REG_OUT_TOTAL_HEIGHT_LOW        0x380f
  48
  49 /*
  50  * define standard resolution.
  51  * Works currently only for up to 720 lines
  52  * eg. 320x240, 640x480, 800x600, 1280x720, 2048x720
  53  */
  54
  55 #define OV5642_WIDTH            1280
  56 #define OV5642_HEIGHT           720
  57 #define OV5642_TOTAL_WIDTH      3200
  58 #define OV5642_TOTAL_HEIGHT     2000
  59 #define OV5642_SENSOR_SIZE_X    2592
  60 #define OV5642_SENSOR_SIZE_Y    1944
  61
  62 struct regval_list {
  63         u16 reg_num;
  64         u8 value;
  65 };
  66
  67 static struct regval_list ov5642_default_regs_init[] = {
  68         { 0x3103, 0x93 },
  69         { 0x3008, 0x82 },
  70         { 0x3017, 0x7f },
  71         { 0x3018, 0xfc },
  72         { 0x3810, 0xc2 },
  73         { 0x3615, 0xf0 },
  74         { 0x3000, 0x0  },
  75         { 0x3001, 0x0  },
  76         { 0x3002, 0x0  },
  77         { 0x3003, 0x0  },
  78         { 0x3004, 0xff },
  79         { 0x3030, 0x2b },
  80         { 0x3011, 0x8  },
  81         { 0x3010, 0x10 },
  82         { 0x3604, 0x60 },
  83         { 0x3622, 0x60 },
  84         { 0x3621, 0x9  },
  85         { 0x3709, 0x0  },
  86         { 0x4000, 0x21 },
  87         { 0x401d, 0x22 },
  88         { 0x3600, 0x54 },
  89         { 0x3605, 0x4  },
  90         { 0x3606, 0x3f },
  91         { 0x3c01, 0x80 },
  92         { 0x300d, 0x22 },
  93         { 0x3623, 0x22 },
  94         { 0x5000, 0x4f },
  95         { 0x5020, 0x4  },
  96         { 0x5181, 0x79 },
  97         { 0x5182, 0x0  },
  98         { 0x5185, 0x22 },
  99         { 0x5197, 0x1  },
 100         { 0x5500, 0xa  },
 101         { 0x5504, 0x0  },
 102         { 0x5505, 0x7f },
 103         { 0x5080, 0x8  },
 104         { 0x300e, 0x18 },
 105         { 0x4610, 0x0  },
 106         { 0x471d, 0x5  },
 107         { 0x4708, 0x6  },
 108         { 0x370c, 0xa0 },
 109         { 0x5687, 0x94 },
 110         { 0x501f, 0x0  },
 111         { 0x5000, 0x4f },
 112         { 0x5001, 0xcf },
 113         { 0x4300, 0x30 },
 114         { 0x4300, 0x30 },
 115         { 0x460b, 0x35 },
 116         { 0x471d, 0x0  },
 117         { 0x3002, 0xc  },
 118         { 0x3002, 0x0  },
 119         { 0x4713, 0x3  },
 120         { 0x471c, 0x50 },
 121         { 0x4721, 0x2  },
 122         { 0x4402, 0x90 },
 123         { 0x460c, 0x22 },
 124         { 0x3815, 0x44 },
 125         { 0x3503, 0x7  },
 126         { 0x3501, 0x73 },
 127         { 0x3502, 0x80 },
 128         { 0x350b, 0x0  },
 129         { 0x3818, 0xc8 },
 130         { 0x3824, 0x11 },
 131         { 0x3a00, 0x78 },
 132         { 0x3a1a, 0x4  },
 133         { 0x3a13, 0x30 },
 134         { 0x3a18, 0x0  },
 135         { 0x3a19, 0x7c },
 136         { 0x3a08, 0x12 },
 137         { 0x3a09, 0xc0 },
 138         { 0x3a0a, 0xf  },
 139         { 0x3a0b, 0xa0 },
 140         { 0x350c, 0x7  },
 141         { 0x350d, 0xd0 },
 142         { 0x3a0d, 0x8  },
 143         { 0x3a0e, 0x6  },
 144         { 0x3500, 0x0  },
 145         { 0x3501, 0x0  },
 146         { 0x3502, 0x0  },
 147         { 0x350a, 0x0  },
 148         { 0x350b, 0x0  },
 149         { 0x3503, 0x0  },
 150         { 0x3a0f, 0x3c },
 151         { 0x3a10, 0x32 },
 152         { 0x3a1b, 0x3c },
 153         { 0x3a1e, 0x32 },
 154         { 0x3a11, 0x80 },
 155         { 0x3a1f, 0x20 },
 156         { 0x3030, 0x2b },
 157         { 0x3a02, 0x0  },
 158         { 0x3a03, 0x7d },
 159         { 0x3a04, 0x0  },
 160         { 0x3a14, 0x0  },
 161         { 0x3a15, 0x7d },
 162         { 0x3a16, 0x0  },
 163         { 0x3a00, 0x78 },
 164         { 0x3a08, 0x9  },
 165         { 0x3a09, 0x60 },
 166         { 0x3a0a, 0x7  },
 167         { 0x3a0b, 0xd0 },
 168         { 0x3a0d, 0x10 },
 169         { 0x3a0e, 0xd  },
 170         { 0x4407, 0x4  },
 171         { 0x5193, 0x70 },
 172         { 0x589b, 0x0  },
 173         { 0x589a, 0xc0 },
 174         { 0x401e, 0x20 },
 175         { 0x4001, 0x42 },
 176         { 0x401c, 0x6  },
 177         { 0x3825, 0xac },
 178         { 0x3827, 0xc  },
 179         { 0x528a, 0x1  },
 180         { 0x528b, 0x4  },
 181         { 0x528c, 0x8  },
 182         { 0x528d, 0x10 },
 183         { 0x528e, 0x20 },
 184         { 0x528f, 0x28 },
 185         { 0x5290, 0x30 },
 186         { 0x5292, 0x0  },
 187         { 0x5293, 0x1  },
 188         { 0x5294, 0x0  },
 189         { 0x5295, 0x4  },
 190         { 0x5296, 0x0  },
 191         { 0x5297, 0x8  },
 192         { 0x5298, 0x0  },
 193         { 0x5299, 0x10 },
 194         { 0x529a, 0x0  },
 195         { 0x529b, 0x20 },
 196         { 0x529c, 0x0  },
 197         { 0x529d, 0x28 },
 198         { 0x529e, 0x0  },
 199         { 0x529f, 0x30 },
 200         { 0x5282, 0x0  },
 201         { 0x5300, 0x0  },
 202         { 0x5301, 0x20 },
 203         { 0x5302, 0x0  },
 204         { 0x5303, 0x7c },
 205         { 0x530c, 0x0  },
 206         { 0x530d, 0xc  },
 207         { 0x530e, 0x20 },
 208         { 0x530f, 0x80 },
 209         { 0x5310, 0x20 },
 210         { 0x5311, 0x80 },
 211         { 0x5308, 0x20 },
 212         { 0x5309, 0x40 },
 213         { 0x5304, 0x0  },
 214         { 0x5305, 0x30 },
 215         { 0x5306, 0x0  },
 216         { 0x5307, 0x80 },
 217         { 0x5314, 0x8  },
 218         { 0x5315, 0x20 },
 219         { 0x5319, 0x30 },
 220         { 0x5316, 0x10 },
 221         { 0x5317, 0x0  },
 222         { 0x5318, 0x2  },
 223         { 0x5380, 0x1  },
 224         { 0x5381, 0x0  },
 225         { 0x5382, 0x0  },
 226         { 0x5383, 0x4e },
 227         { 0x5384, 0x0  },
 228         { 0x5385, 0xf  },
 229         { 0x5386, 0x0  },
 230         { 0x5387, 0x0  },
 231         { 0x5388, 0x1  },
 232         { 0x5389, 0x15 },
 233         { 0x538a, 0x0  },
 234         { 0x538b, 0x31 },
 235         { 0x538c, 0x0  },
 236         { 0x538d, 0x0  },
 237         { 0x538e, 0x0  },
 238         { 0x538f, 0xf  },
 239         { 0x5390, 0x0  },
 240         { 0x5391, 0xab },
 241         { 0x5392, 0x0  },
 242         { 0x5393, 0xa2 },
 243         { 0x5394, 0x8  },
 244         { 0x5480, 0x14 },
 245         { 0x5481, 0x21 },
 246         { 0x5482, 0x36 },
 247         { 0x5483, 0x57 },
 248         { 0x5484, 0x65 },
 249         { 0x5485, 0x71 },
 250         { 0x5486, 0x7d },
 251         { 0x5487, 0x87 },
 252         { 0x5488, 0x91 },
 253         { 0x5489, 0x9a },
 254         { 0x548a, 0xaa },
 255         { 0x548b, 0xb8 },
 256         { 0x548c, 0xcd },
 257         { 0x548d, 0xdd },
 258         { 0x548e, 0xea },
 259         { 0x548f, 0x1d },
 260         { 0x5490, 0x5  },
 261         { 0x5491, 0x0  },
 262         { 0x5492, 0x4  },
 263         { 0x5493, 0x20 },
 264         { 0x5494, 0x3  },
 265         { 0x5495, 0x60 },
 266         { 0x5496, 0x2  },
 267         { 0x5497, 0xb8 },
 268         { 0x5498, 0x2  },
 269         { 0x5499, 0x86 },
 270         { 0x549a, 0x2  },
 271         { 0x549b, 0x5b },
 272         { 0x549c, 0x2  },
 273         { 0x549d, 0x3b },
 274         { 0x549e, 0x2  },
 275         { 0x549f, 0x1c },
 276         { 0x54a0, 0x2  },
 277         { 0x54a1, 0x4  },
 278         { 0x54a2, 0x1  },
 279         { 0x54a3, 0xed },
 280         { 0x54a4, 0x1  },
 281         { 0x54a5, 0xc5 },
 282         { 0x54a6, 0x1  },
 283         { 0x54a7, 0xa5 },
 284         { 0x54a8, 0x1  },
 285         { 0x54a9, 0x6c },
 286         { 0x54aa, 0x1  },
 287         { 0x54ab, 0x41 },
 288         { 0x54ac, 0x1  },
 289         { 0x54ad, 0x20 },
 290         { 0x54ae, 0x0  },
 291         { 0x54af, 0x16 },
 292         { 0x54b0, 0x1  },
 293         { 0x54b1, 0x20 },
 294         { 0x54b2, 0x0  },
 295         { 0x54b3, 0x10 },
 296         { 0x54b4, 0x0  },
 297         { 0x54b5, 0xf0 },
 298         { 0x54b6, 0x0  },
 299         { 0x54b7, 0xdf },
 300         { 0x5402, 0x3f },
 301         { 0x5403, 0x0  },
 302         { 0x3406, 0x0  },
 303         { 0x5180, 0xff },
 304         { 0x5181, 0x52 },
 305         { 0x5182, 0x11 },
 306         { 0x5183, 0x14 },
 307         { 0x5184, 0x25 },
 308         { 0x5185, 0x24 },
 309         { 0x5186, 0x6  },
 310         { 0x5187, 0x8  },
 311         { 0x5188, 0x8  },
 312         { 0x5189, 0x7c },
 313         { 0x518a, 0x60 },
 314         { 0x518b, 0xb2 },
 315         { 0x518c, 0xb2 },
 316         { 0x518d, 0x44 },
 317         { 0x518e, 0x3d },
 318         { 0x518f, 0x58 },
 319         { 0x5190, 0x46 },
 320         { 0x5191, 0xf8 },
 321         { 0x5192, 0x4  },
 322         { 0x5193, 0x70 },
 323         { 0x5194, 0xf0 },
 324         { 0x5195, 0xf0 },
 325         { 0x5196, 0x3  },
 326         { 0x5197, 0x1  },
 327         { 0x5198, 0x4  },
 328         { 0x5199, 0x12 },
 329         { 0x519a, 0x4  },
 330         { 0x519b, 0x0  },
 331         { 0x519c, 0x6  },
 332         { 0x519d, 0x82 },
 333         { 0x519e, 0x0  },
 334         { 0x5025, 0x80 },
 335         { 0x3a0f, 0x38 },
 336         { 0x3a10, 0x30 },
 337         { 0x3a1b, 0x3a },
 338         { 0x3a1e, 0x2e },
 339         { 0x3a11, 0x60 },
 340         { 0x3a1f, 0x10 },
 341         { 0x5688, 0xa6 },
 342         { 0x5689, 0x6a },
 343         { 0x568a, 0xea },
 344         { 0x568b, 0xae },
 345         { 0x568c, 0xa6 },
 346         { 0x568d, 0x6a },
 347         { 0x568e, 0x62 },
 348         { 0x568f, 0x26 },
 349         { 0x5583, 0x40 },
 350         { 0x5584, 0x40 },
 351         { 0x5580, 0x2  },
 352         { 0x5000, 0xcf },
 353         { 0x5800, 0x27 },
 354         { 0x5801, 0x19 },
 355         { 0x5802, 0x12 },
 356         { 0x5803, 0xf  },
 357         { 0x5804, 0x10 },
 358         { 0x5805, 0x15 },
 359         { 0x5806, 0x1e },
 360         { 0x5807, 0x2f },
 361         { 0x5808, 0x15 },
 362         { 0x5809, 0xd  },
 363         { 0x580a, 0xa  },
 364         { 0x580b, 0x9  },
 365         { 0x580c, 0xa  },
 366         { 0x580d, 0xc  },
 367         { 0x580e, 0x12 },
 368         { 0x580f, 0x19 },
 369         { 0x5810, 0xb  },
 370         { 0x5811, 0x7  },
 371         { 0x5812, 0x4  },
 372         { 0x5813, 0x3  },
 373         { 0x5814, 0x3  },
 374         { 0x5815, 0x6  },
 375         { 0x5816, 0xa  },
 376         { 0x5817, 0xf  },
 377         { 0x5818, 0xa  },
 378         { 0x5819, 0x5  },
 379         { 0x581a, 0x1  },
 380         { 0x581b, 0x0  },
 381         { 0x581c, 0x0  },
 382         { 0x581d, 0x3  },
 383         { 0x581e, 0x8  },
 384         { 0x581f, 0xc  },
 385         { 0x5820, 0xa  },
 386         { 0x5821, 0x5  },
 387         { 0x5822, 0x1  },
 388         { 0x5823, 0x0  },
 389         { 0x5824, 0x0  },
 390         { 0x5825, 0x3  },
 391         { 0x5826, 0x8  },
 392         { 0x5827, 0xc  },
 393         { 0x5828, 0xe  },
 394         { 0x5829, 0x8  },
 395         { 0x582a, 0x6  },
 396         { 0x582b, 0x4  },
 397         { 0x582c, 0x5  },
 398         { 0x582d, 0x7  },
 399         { 0x582e, 0xb  },
 400         { 0x582f, 0x12 },
 401         { 0x5830, 0x18 },
 402         { 0x5831, 0x10 },
 403         { 0x5832, 0xc  },
 404         { 0x5833, 0xa  },
 405         { 0x5834, 0xb  },
 406         { 0x5835, 0xe  },
 407         { 0x5836, 0x15 },
 408         { 0x5837, 0x19 },
 409         { 0x5838, 0x32 },
 410         { 0x5839, 0x1f },
 411         { 0x583a, 0x18 },
 412         { 0x583b, 0x16 },
 413         { 0x583c, 0x17 },
 414         { 0x583d, 0x1e },
 415         { 0x583e, 0x26 },
 416         { 0x583f, 0x53 },
 417         { 0x5840, 0x10 },
 418         { 0x5841, 0xf  },
 419         { 0x5842, 0xd  },
 420         { 0x5843, 0xc  },
 421         { 0x5844, 0xe  },
 422         { 0x5845, 0x9  },
 423         { 0x5846, 0x11 },
 424         { 0x5847, 0x10 },
 425         { 0x5848, 0x10 },
 426         { 0x5849, 0x10 },
 427         { 0x584a, 0x10 },
 428         { 0x584b, 0xe  },
 429         { 0x584c, 0x10 },
 430         { 0x584d, 0x10 },
 431         { 0x584e, 0x11 },
 432         { 0x584f, 0x10 },
 433         { 0x5850, 0xf  },
 434         { 0x5851, 0xc  },
 435         { 0x5852, 0xf  },
 436         { 0x5853, 0x10 },
 437         { 0x5854, 0x10 },
 438         { 0x5855, 0xf  },
 439         { 0x5856, 0xe  },
 440         { 0x5857, 0xb  },
 441         { 0x5858, 0x10 },
 442         { 0x5859, 0xd  },
 443         { 0x585a, 0xd  },
 444         { 0x585b, 0xc  },
 445         { 0x585c, 0xc  },
 446         { 0x585d, 0xc  },
 447         { 0x585e, 0xb  },
 448         { 0x585f, 0xc  },
 449         { 0x5860, 0xc  },
 450         { 0x5861, 0xc  },
 451         { 0x5862, 0xd  },
 452         { 0x5863, 0x8  },
 453         { 0x5864, 0x11 },
 454         { 0x5865, 0x18 },
 455         { 0x5866, 0x18 },
 456         { 0x5867, 0x19 },
 457         { 0x5868, 0x17 },
 458         { 0x5869, 0x19 },
 459         { 0x586a, 0x16 },
 460         { 0x586b, 0x13 },
 461         { 0x586c, 0x13 },
 462         { 0x586d, 0x12 },
 463         { 0x586e, 0x13 },
 464         { 0x586f, 0x16 },
 465         { 0x5870, 0x14 },
 466         { 0x5871, 0x12 },
 467         { 0x5872, 0x10 },
 468         { 0x5873, 0x11 },
 469         { 0x5874, 0x11 },
 470         { 0x5875, 0x16 },
 471         { 0x5876, 0x14 },
 472         { 0x5877, 0x11 },
 473         { 0x5878, 0x10 },
 474         { 0x5879, 0xf  },
 475         { 0x587a, 0x10 },
 476         { 0x587b, 0x14 },
 477         { 0x587c, 0x13 },
 478         { 0x587d, 0x12 },
 479         { 0x587e, 0x11 },
 480         { 0x587f, 0x11 },
 481         { 0x5880, 0x12 },
 482         { 0x5881, 0x15 },
 483         { 0x5882, 0x14 },
 484         { 0x5883, 0x15 },
 485         { 0x5884, 0x15 },
 486         { 0x5885, 0x15 },
 487         { 0x5886, 0x13 },
 488         { 0x5887, 0x17 },
 489         { 0x3710, 0x10 },
 490         { 0x3632, 0x51 },
 491         { 0x3702, 0x10 },
 492         { 0x3703, 0xb2 },
 493         { 0x3704, 0x18 },
 494         { 0x370b, 0x40 },
 495         { 0x370d, 0x3  },
 496         { 0x3631, 0x1  },
 497         { 0x3632, 0x52 },
 498         { 0x3606, 0x24 },
 499         { 0x3620, 0x96 },
 500         { 0x5785, 0x7  },
 501         { 0x3a13, 0x30 },
 502         { 0x3600, 0x52 },
 503         { 0x3604, 0x48 },
 504         { 0x3606, 0x1b },
 505         { 0x370d, 0xb  },
 506         { 0x370f, 0xc0 },
 507         { 0x3709, 0x1  },
 508         { 0x3823, 0x0  },
 509         { 0x5007, 0x0  },
 510         { 0x5009, 0x0  },
 511         { 0x5011, 0x0  },
 512         { 0x5013, 0x0  },
 513         { 0x519e, 0x0  },
 514         { 0x5086, 0x0  },
 515         { 0x5087, 0x0  },
 516         { 0x5088, 0x0  },
 517         { 0x5089, 0x0  },
 518         { 0x302b, 0x0  },
 519         { 0x3503, 0x7  },
 520         { 0x3011, 0x8  },
 521         { 0x350c, 0x2  },
 522         { 0x350d, 0xe4 },
 523         { 0x3621, 0xc9 },
 524         { 0x370a, 0x81 },
 525         { 0xffff, 0xff },
 526 };
 527
 528 static struct regval_list ov5642_default_regs_finalise[] = {
 529         { 0x3810, 0xc2 },
 530         { 0x3818, 0xc9 },
 531         { 0x381c, 0x10 },
 532         { 0x381d, 0xa0 },
 533         { 0x381e, 0x5  },
 534         { 0x381f, 0xb0 },
 535         { 0x3820, 0x0  },
 536         { 0x3821, 0x0  },
 537         { 0x3824, 0x11 },
 538         { 0x3a08, 0x1b },
 539         { 0x3a09, 0xc0 },
 540         { 0x3a0a, 0x17 },
 541         { 0x3a0b, 0x20 },
 542         { 0x3a0d, 0x2  },
 543         { 0x3a0e, 0x1  },
 544         { 0x401c, 0x4  },
 545         { 0x5682, 0x5  },
 546         { 0x5683, 0x0  },
 547         { 0x5686, 0x2  },
 548         { 0x5687, 0xcc },
 549         { 0x5001, 0x4f },
 550         { 0x589b, 0x6  },
 551         { 0x589a, 0xc5 },
 552         { 0x3503, 0x0  },
 553         { 0x460c, 0x20 },
 554         { 0x460b, 0x37 },
 555         { 0x471c, 0xd0 },
 556         { 0x471d, 0x5  },
 557         { 0x3815, 0x1  },
 558         { 0x3818, 0xc1 },
 559         { 0x501f, 0x0  },
 560         { 0x5002, 0xe0 },
 561         { 0x4300, 0x32 }, /* UYVY */
 562         { 0x3002, 0x1c },
 563         { 0x4800, 0x14 },
 564         { 0x4801, 0xf  },
 565         { 0x3007, 0x3b },
 566         { 0x300e, 0x4  },
 567         { 0x4803, 0x50 },
 568         { 0x3815, 0x1  },
 569         { 0x4713, 0x2  },
 570         { 0x4842, 0x1  },
 571         { 0x300f, 0xe  },
 572         { 0x3003, 0x3  },
 573         { 0x3003, 0x1  },
 574         { 0xffff, 0xff },
 575 };
 576
 577 struct ov5642_datafmt {
 578         enum v4l2_mbus_pixelcode        code;
 579         enum v4l2_colorspace            colorspace;
 580 };
 581
 582 struct ov5642 {
 583         struct v4l2_subdev              subdev;
 584         const struct ov5642_datafmt     *fmt;
 585 };
 586
 587 static const struct ov5642_datafmt ov5642_colour_fmts[] = {
 588         {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
 589 };
 590
 591 static struct ov5642 *to_ov5642(const struct i2c_client *client)
 592 {
 593         return container_of(i2c_get_clientdata(client), struct ov5642, subdev);
 594 }
 595
 596 /* Find a data format by a pixel code in an array */
 597 static const struct ov5642_datafmt
 598                         *ov5642_find_datafmt(enum v4l2_mbus_pixelcode code)
 599 {
 600         int i;
 601
 602         for (i = 0; i < ARRAY_SIZE(ov5642_colour_fmts); i++)
 603                 if (ov5642_colour_fmts[i].code == code)
 604                         return ov5642_colour_fmts + i;
 605
 606         return NULL;
 607 }
 608
 609 static int reg_read(struct i2c_client *client, u16 reg, u8 *val)
 610 {
 611         int ret;
 612         /* We have 16-bit i2c addresses - care for endianess */
 613         unsigned char data[2] = { reg >> 8, reg & 0xff };
 614
 615         ret = i2c_master_send(client, data, 2);
 616         if (ret < 2) {
 617                 dev_err(&client->dev, "%s: i2c read error, reg: %x\n",
 618                         __func__, reg);
 619                 return ret < 0 ? ret : -EIO;
 620         }
 621
 622         ret = i2c_master_recv(client, val, 1);
 623         if (ret < 1) {
 624                 dev_err(&client->dev, "%s: i2c read error, reg: %x\n",
 625                                 __func__, reg);
 626                 return ret < 0 ? ret : -EIO;
 627         }
 628         return 0;
 629 }
 630
 631 static int reg_write(struct i2c_client *client, u16 reg, u8 val)
 632 {
 633         int ret;
 634         unsigned char data[3] = { reg >> 8, reg & 0xff, val };
 635
 636         ret = i2c_master_send(client, data, 3);
 637         if (ret < 3) {
 638                 dev_err(&client->dev, "%s: i2c write error, reg: %x\n",
 639                         __func__, reg);
 640                 return ret < 0 ? ret : -EIO;
 641         }
 642
 643         return 0;
 644 }
 645 #ifdef CONFIG_VIDEO_ADV_DEBUG
 646 static int ov5642_get_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 647 {
 648         struct i2c_client *client = v4l2_get_subdevdata(sd);
 649         int ret;
 650         u8 val;
 651
 652         if (reg->reg & ~0xffff)
 653                 return -EINVAL;
 654
 655         reg->size = 1;
 656
 657         ret = reg_read(client, reg->reg, &val);
 658         if (!ret)
 659                 reg->val = (__u64)val;
 660
 661         return ret;
 662 }
 663
 664 static int ov5642_set_register(struct v4l2_subdev *sd, struct v4l2_dbg_register *reg)
 665 {
 666         struct i2c_client *client = v4l2_get_subdevdata(sd);
 667
 668         if (reg->reg & ~0xffff || reg->val & ~0xff)
 669                 return -EINVAL;
 670
 671         return reg_write(client, reg->reg, reg->val);
 672 }
 673 #endif
 674
 675 static int ov5642_write_array(struct i2c_client *client,
 676                                 struct regval_list *vals)
 677 {
 678         while (vals->reg_num != 0xffff || vals->value != 0xff) {
 679                 int ret = reg_write(client, vals->reg_num, vals->value);
 680                 if (ret < 0)
 681                         return ret;
 682                 vals++;
 683         }
 684         dev_dbg(&client->dev, "Register list loaded\n");
 685         return 0;
 686 }
 687
 688 static int ov5642_set_resolution(struct i2c_client *client)
 689 {
 690         int ret;
 691         u8 start_x_high = ((OV5642_SENSOR_SIZE_X - OV5642_WIDTH) / 2) >> 8;
 692         u8 start_x_low  = ((OV5642_SENSOR_SIZE_X - OV5642_WIDTH) / 2) & 0xff;
 693         u8 start_y_high = ((OV5642_SENSOR_SIZE_Y - OV5642_HEIGHT) / 2) >> 8;
 694         u8 start_y_low  = ((OV5642_SENSOR_SIZE_Y - OV5642_HEIGHT) / 2) & 0xff;
 695
 696         u8 width_high   = OV5642_WIDTH  >> 8;
 697         u8 width_low    = OV5642_WIDTH  & 0xff;
 698         u8 height_high  = OV5642_HEIGHT >> 8;
 699         u8 height_low   = OV5642_HEIGHT & 0xff;
 700
 701         u8 total_width_high  = OV5642_TOTAL_WIDTH  >> 8;
 702         u8 total_width_low   = OV5642_TOTAL_WIDTH  & 0xff;
 703         u8 total_height_high = OV5642_TOTAL_HEIGHT >> 8;
 704         u8 total_height_low  = OV5642_TOTAL_HEIGHT & 0xff;
 705
 706         ret = reg_write(client, REG_WINDOW_START_X_HIGH, start_x_high);
 707         if (!ret)
 708                 ret = reg_write(client, REG_WINDOW_START_X_LOW, start_x_low);
 709         if (!ret)
 710                 ret = reg_write(client, REG_WINDOW_START_Y_HIGH, start_y_high);
 711         if (!ret)
 712                 ret = reg_write(client, REG_WINDOW_START_Y_LOW, start_y_low);
 713
 714         if (!ret)
 715                 ret = reg_write(client, REG_WINDOW_WIDTH_HIGH, width_high);
 716         if (!ret)
 717                 ret = reg_write(client, REG_WINDOW_WIDTH_LOW , width_low);
 718         if (!ret)
 719                 ret = reg_write(client, REG_WINDOW_HEIGHT_HIGH, height_high);
 720         if (!ret)
 721                 ret = reg_write(client, REG_WINDOW_HEIGHT_LOW,  height_low);
 722
 723         if (!ret)
 724                 ret = reg_write(client, REG_OUT_WIDTH_HIGH, width_high);
 725         if (!ret)
 726                 ret = reg_write(client, REG_OUT_WIDTH_LOW , width_low);
 727         if (!ret)
 728                 ret = reg_write(client, REG_OUT_HEIGHT_HIGH, height_high);
 729         if (!ret)
 730                 ret = reg_write(client, REG_OUT_HEIGHT_LOW,  height_low);
 731
 732         if (!ret)
 733                 ret = reg_write(client, REG_OUT_TOTAL_WIDTH_HIGH, total_width_high);
 734         if (!ret)
 735                 ret = reg_write(client, REG_OUT_TOTAL_WIDTH_LOW, total_width_low);
 736         if (!ret)
 737                 ret = reg_write(client, REG_OUT_TOTAL_HEIGHT_HIGH, total_height_high);
 738         if (!ret)
 739                 ret = reg_write(client, REG_OUT_TOTAL_HEIGHT_LOW,  total_height_low);
 740
 741         return ret;
 742 }
 743
 744 static int ov5642_try_fmt(struct v4l2_subdev *sd,
 745                           struct v4l2_mbus_framefmt *mf)
 746 {
 747         const struct ov5642_datafmt *fmt = ov5642_find_datafmt(mf->code);
 748
 749         dev_dbg(sd->v4l2_dev->dev, "%s(%u) width: %u heigth: %u\n",
 750                         __func__, mf->code, mf->width, mf->height);
 751
 752         if (!fmt) {
 753                 mf->code        = ov5642_colour_fmts[0].code;
 754                 mf->colorspace  = ov5642_colour_fmts[0].colorspace;
 755         }
 756
 757         mf->width       = OV5642_WIDTH;
 758         mf->height      = OV5642_HEIGHT;
 759         mf->field       = V4L2_FIELD_NONE;
 760
 761         return 0;
 762 }
 763
 764 static int ov5642_s_fmt(struct v4l2_subdev *sd,
 765                         struct v4l2_mbus_framefmt *mf)
 766 {
 767         struct i2c_client *client = v4l2_get_subdevdata(sd);
 768         struct ov5642 *priv = to_ov5642(client);
 769
 770         dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code);
 771
 772         /* MIPI CSI could have changed the format, double-check */
 773         if (!ov5642_find_datafmt(mf->code))
 774                 return -EINVAL;
 775
 776         ov5642_try_fmt(sd, mf);
 777
 778         priv->fmt = ov5642_find_datafmt(mf->code);
 779
 780         ov5642_write_array(client, ov5642_default_regs_init);
 781         ov5642_set_resolution(client);
 782         ov5642_write_array(client, ov5642_default_regs_finalise);
 783
 784         return 0;
 785 }
 786
 787 static int ov5642_g_fmt(struct v4l2_subdev *sd,
 788                         struct v4l2_mbus_framefmt *mf)
 789 {
 790         struct i2c_client *client = v4l2_get_subdevdata(sd);
 791         struct ov5642 *priv = to_ov5642(client);
 792
 793         const struct ov5642_datafmt *fmt = priv->fmt;
 794
 795         mf->code        = fmt->code;
 796         mf->colorspace  = fmt->colorspace;
 797         mf->width       = OV5642_WIDTH;
 798         mf->height      = OV5642_HEIGHT;
 799         mf->field       = V4L2_FIELD_NONE;
 800
 801         return 0;
 802 }
 803
 804 static int ov5642_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
 805                            enum v4l2_mbus_pixelcode *code)
 806 {
 807         if (index >= ARRAY_SIZE(ov5642_colour_fmts))
 808                 return -EINVAL;
 809
 810         *code = ov5642_colour_fmts[index].code;
 811         return 0;
 812 }
 813
 814 static int ov5642_g_chip_ident(struct v4l2_subdev *sd,
 815                                struct v4l2_dbg_chip_ident *id)
 816 {
 817         struct i2c_client *client = v4l2_get_subdevdata(sd);
 818
 819         if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
 820                 return -EINVAL;
 821
 822         if (id->match.addr != client->addr)
 823                 return -ENODEV;
 824
 825         id->ident       = V4L2_IDENT_OV5642;
 826         id->revision    = 0;
 827
 828         return 0;
 829 }
 830
 831 static int ov5642_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
 832 {
 833         struct v4l2_rect *rect = &a->c;
 834
 835         a->type         = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 836         rect->top       = 0;
 837         rect->left      = 0;
 838         rect->width     = OV5642_WIDTH;
 839         rect->height    = OV5642_HEIGHT;
 840
 841         return 0;
 842 }
 843
 844 static int ov5642_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
 845 {
 846         a->bounds.left                  = 0;
 847         a->bounds.top                   = 0;
 848         a->bounds.width                 = OV5642_WIDTH;
 849         a->bounds.height                = OV5642_HEIGHT;
 850         a->defrect                      = a->bounds;
 851         a->type                         = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 852         a->pixelaspect.numerator        = 1;
 853         a->pixelaspect.denominator      = 1;
 854
 855         return 0;
 856 }
 857
 858 static struct v4l2_subdev_video_ops ov5642_subdev_video_ops = {
 859         .s_mbus_fmt     = ov5642_s_fmt,
 860         .g_mbus_fmt     = ov5642_g_fmt,
 861         .try_mbus_fmt   = ov5642_try_fmt,
 862         .enum_mbus_fmt  = ov5642_enum_fmt,
 863         .g_crop         = ov5642_g_crop,
 864         .cropcap        = ov5642_cropcap,
 865 };
 866
 867 static struct v4l2_subdev_core_ops ov5642_subdev_core_ops = {
 868         .g_chip_ident   = ov5642_g_chip_ident,
 869 #ifdef CONFIG_VIDEO_ADV_DEBUG
 870         .g_register     = ov5642_get_register,
 871         .s_register     = ov5642_set_register,
 872 #endif
 873 };
 874
 875 static struct v4l2_subdev_ops ov5642_subdev_ops = {
 876         .core   = &ov5642_subdev_core_ops,
 877         .video  = &ov5642_subdev_video_ops,
 878 };
 879
 880 /*
 881  * We have to provide soc-camera operations, but we don't have anything to say
 882  * there. The MIPI CSI2 driver will provide .query_bus_param and .set_bus_param
 883  */
 884 static unsigned long soc_ov5642_query_bus_param(struct soc_camera_device *icd)
 885 {
 886         return 0;
 887 }
 888
 889 static int soc_ov5642_set_bus_param(struct soc_camera_device *icd,
 890                                  unsigned long flags)
 891 {
 892         return -EINVAL;
 893 }
 894
 895 static struct soc_camera_ops soc_ov5642_ops = {
 896         .query_bus_param        = soc_ov5642_query_bus_param,
 897         .set_bus_param          = soc_ov5642_set_bus_param,
 898 };
 899
 900 static int ov5642_video_probe(struct soc_camera_device *icd,
 901                               struct i2c_client *client)
 902 {
 903         int ret;
 904         u8 id_high, id_low;
 905         u16 id;
 906
 907         /* Read sensor Model ID */
 908         ret = reg_read(client, REG_CHIP_ID_HIGH, &id_high);
 909         if (ret < 0)
 910                 return ret;
 911
 912         id = id_high << 8;
 913
 914         ret = reg_read(client, REG_CHIP_ID_LOW, &id_low);
 915         if (ret < 0)
 916                 return ret;
 917
 918         id |= id_low;
 919
 920         dev_info(&client->dev, "Chip ID 0x%04x detected\n", id);
 921
 922         if (id != 0x5642)
 923                 return -ENODEV;
 924
 925         return 0;
 926 }
 927
 928 static int ov5642_probe(struct i2c_client *client,
 929                         const struct i2c_device_id *did)
 930 {
 931         struct ov5642 *priv;
 932         struct soc_camera_device *icd = client->dev.platform_data;
 933         struct soc_camera_link *icl;
 934         int ret;
 935
 936         if (!icd) {
 937                 dev_err(&client->dev, "OV5642: missing soc-camera data!\n");
 938                 return -EINVAL;
 939         }
 940
 941         icl = to_soc_camera_link(icd);
 942         if (!icl) {
 943                 dev_err(&client->dev, "OV5642: missing platform data!\n");
 944                 return -EINVAL;
 945         }
 946
 947         priv = kzalloc(sizeof(struct ov5642), GFP_KERNEL);
 948         if (!priv)
 949                 return -ENOMEM;
 950
 951         v4l2_i2c_subdev_init(&priv->subdev, client, &ov5642_subdev_ops);
 952
 953         icd->ops        = &soc_ov5642_ops;
 954         priv->fmt       = &ov5642_colour_fmts[0];
 955
 956         ret = ov5642_video_probe(icd, client);
 957         if (ret < 0)
 958                 goto error;
 959
 960         return 0;
 961
 962 error:
 963         icd->ops = NULL;
 964         kfree(priv);
 965         return ret;
 966 }
 967
 968 static int ov5642_remove(struct i2c_client *client)
 969 {
 970         struct ov5642 *priv = to_ov5642(client);
 971         struct soc_camera_device *icd = client->dev.platform_data;
 972         struct soc_camera_link *icl = to_soc_camera_link(icd);
 973
 974         icd->ops = NULL;
 975         if (icl->free_bus)
 976                 icl->free_bus(icl);
 977         kfree(priv);
 978
 979         return 0;
 980 }
 981
 982 static const struct i2c_device_id ov5642_id[] = {
 983         { "ov5642", 0 },
 984         { }
 985 };
 986 MODULE_DEVICE_TABLE(i2c, ov5642_id);
 987
 988 static struct i2c_driver ov5642_i2c_driver = {
 989         .driver = {
 990                 .name = "ov5642",
 991         },
 992         .probe          = ov5642_probe,
 993         .remove         = ov5642_remove,
 994         .id_table       = ov5642_id,
 995 };
 996
 997 static int __init ov5642_mod_init(void)
 998 {
 999         return i2c_add_driver(&ov5642_i2c_driver);
1000 }
1001
1002 static void __exit ov5642_mod_exit(void)
1003 {
1004         i2c_del_driver(&ov5642_i2c_driver);
1005 }
1006
1007 module_init(ov5642_mod_init);
1008 module_exit(ov5642_mod_exit);
1009
1010 MODULE_DESCRIPTION("Omnivision OV5642 Camera driver");
1011 MODULE_AUTHOR("Bastian Hecht <hechtb@gmail.com>");
1012 MODULE_LICENSE("GPL v2");